Recalbox sur TV CRT en RGB

[ian57]

You're misunderstanding here, recalbox would be glad to include and support your hardware, but on my side the name rgb-pi seems not to reflect all the possibilities of what you've done.
we make rgb from a hdmi-vga converter too... so... you see what I mean?

And as I say dpi24 is already included in recalbox with the standard kernel firmware.

[aTg]

Ok I will work with dpi24 but anyway the file /boot/overlays/dpi24.dts does not exist and I tried to use it in config.txt if it was included inside another file but it does not work

[ian57]

The file is included with the next release of recalbox 4.1 which embeds the 4.14 kernel. In Debian I think you already have the dpi24.dtbo file.

You work will be supported with the next release of recalbox. You only need to make it work with debian, it should also work in the next 4.1 recalbox distro.

[aTg]

The next thing I think it is necessary to work is that NOOBS start in DPI mode, so that the recalbox installation can be done integrally from the TV.

In the INSTRUCTION-README.txt says;

Your Pi will now boot into NOOBS and should display a list of operating systems that you can choose to install.
If your display remains blank, you should select the correct output mode for your display by pressing one of the following number keys    on your keyboard:
1. HDMI mode - this is the default display mode.
2. HDMI safe mode - select this mode if you are using the HDMI connector and cannot see anything on screen when the Pi has booted.
3. Composite PAL mode - select either this mode or composite NTSC mode if you are using the composite RCA video connector.
4. Composite NTSC mode

It would be nice to add option 5 to boot in a DPI mode ...

[ian57]

@aTg That's a good idea. I'm not sure but the next release on Recalbox will be released with .img file to be burned on a SD card. So Noobs will not be nacessary anymore.

[Substring]

@ian57 will ALSO be released as .img, noobs, whatever one says, is a very useful tool.
Noobs 2.0 is out btw

[aTg]

I have not understood very well, that will be released with and without NOOBS.

One of the reasons to choose recalbox for many people is NOOBS because they do not know how to burn an image on a microSD.

If you are going to continue using NOOBS I will be working on it to run in DPI mode.
Please confirm.

[ian57]

@aTg Both... Noobs and img

[r11t16]

Tout d'abord, je tiens à tous vous féliciter pour le monstrueux taf que vous accomplissez.

Je vous explique simplement ma démarche. Je débute dans le monde l'arcade et j'ai commencé à me monter une borne DIY. Pour le moment, je n'ai pas d'écran. J'ai un Rpi 3 comme système. Devant la difficulté à trouver des écrans lcd au format 4/3 de bonne dimensions (sup à 19"), je comptais me rabattre sur un TV CRT (qui a en plus l'avantage de donner de l’authenticité à l'image).
D'après ce que j'ai compris :
je recherche donc un sony trinitron (d'au moins 51) après 1994 si possible.
J'ai choisi la solution HDMI avec les deux adaptateurs (indiqués par archimage) car je veux garder le GPIO pour les sticks et boutons.
Par contre, je me perds un peu dans les différentes config en fonction de la console d'origine et la façon de gérer ça au quotidien.

Du coup : ou en êtes vous concernant le tuto "complet" que archimage devait proposer? (j'ai bien lu le tuto express).
Encore merci et bon courage pour la suite.

[Substring]

@r11t16 on a encore qq semaines/mois de travail dessus. La solution par hdmi2vga reste la plus simple à mettre en œuvre. Faut juste jouer un peu du fer à souder

[aTg]

@r11t16 Your best bet is to wire a female jamma connector and use a RPi jamma adapter, with audio, video and buttons over GPIO.

@ian57 We can use runcommands.sh to put all resolutions there.
Replace tvservices with vcgencmd and then make changes to emulatorlauncher.sh

Another thing to keep in mind is the theme that we use, for such a small resolution is not suitable, I at the moment what I do is edit and enlarge the letters, but it would be good to think of a specific one for low resolutions and with a maximum of 16 bit color.

You can change the font size by editing /recalbox/share_init/system/.emulationstation/themes/recalbox/main.xml and changing all values 0.03 by 0.09 for example.

[ian57]

@aTg for ES resolution and font size, there is an adapted theme upper in the thread which works well.

[Substring]

@aTg We don't use neither runcommand.sh neither emulatorlauncher.sh anymore for ages. All is in /usr/lib/python2.7/site-packages/configgen. You "could" have fun with bash as you may not know python, but better avoid that. I could do the necessary changes to configgen but this would depend mainly on how to make the link between a game and its resolution. We need a resolution "database". I've been working on such a thing for MAME 0.78, it's not yet complete.

The other side of it may be some custom settings to retroarch as, depending on people, they need a viewport offset. But this is already easy to do in 4.1 as @archimage made me develop that, and it's working quite good.

[Scandy]

Hi,
next release of AdvanceMAME will officially support Raspberry Pi including the ability to switch on-the-fly on real native resolution for each game/rom.
I'm testing it right now on Raspbian, and I can confirm that AdvanceMAME can switch automatically to a video mode as close as possible to the native one of each single game/rom (depending on monitor limits, of course) also on Raspberry now.
I believe that Andrea (the developer) will formalize this update soon.

@Substring and @ian57 it would be nice to see it included in future releases of Recalbox (pardonnez-moi si cela est un peu hors sujet, mais je pense qu'il est encore intéressant pour la «recherche»).

@aTg it would be great to test it also with your RGB-Pi.

[Substring]

@Scandy hey pal great news ! i'm just curious to see how he is handling that, and i'm very grateful towards him for the interest he put on the raspberry community (be it retropie or recalbox, his work is a huge step forward !)

@ian57 and I will carefully watch over and test that as soon as possible

Could you just give some details on how it works ? does he change on the fly hdmi timings as he used to do on VGA ?

[ian57]

@Scandy @Substring really a great news ... so no need to manage all this resolution stuff with configgen ?

[Scandy]

@ian57 @Substring no need to manage all resolution configs, at least for Arcade. AdvanceMAME now can manage videomodes on Raspberry Pi exactly as it does for Linux and DOS.
As you can read in my previous posts here, I thought from the beginning that AdvanceMAME would be the perfect "companion" for the findings on this great forum. So I wrote to Andrea some time ago pointing to this thread and various threads on RPi official forums, we started a long conversation by mail and he was so kind to support my stalking buying a Raspberry for the cause.
He is still optimizing the code, but yet the real time resolution switch does it work on RPi via HDMI (I'm still waiting for VGA Shield from Aliexpress). But I really hope that Andrea will write by yourself about his gem.
Resolution switch happens by vcgencmd.

[ian57]

@Scandy @Substring yep we are already aware of the videomodes changes via vcgencmd command..; we are b*mping the firmware in RB 4.1 only for that :). We use HDMI - VGA converter and some resistors to get a working HDMI 2 Scart cable. After that we get pixel perfect via a "simple" videomode config of the Raspi. For now, we checked the 320x224 video mode. It gives great results.

[heyreek]

Hello everyone,
I'm a new user of the RGB mod. I have done a VGA666 home made circuit with the modification of the sync lines but i have few questions.
In fact i have a sync signal issue (few little black marks of the corner of the screen).
My circuit is made up of two 120 Ohms res for each sync lines (H/V) but i think it is not correct. Let me explain: The GPI pins used fot the Sync lines are GPIO 0 output which means that the 3.3V is pulled up throught a 1.8K Ohms res. So, considering the 75 Ohms of the Csync input (on the TV side) the voltage is far away of the 0.7V expected (may be around 0.13V). What do you think about this?

Note: Sorry for the english mistakes, i'am french

[n3o_c59]

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